# AZA Installer / Update System Plan (Step 17)

## 1. Windows installer approach

**Recommended tool:** PyInstaller

**Expected output:** `AZA_Assistant.exe`

---

## 2. Release folder structure

```
release/
  aza_assistant.exe
  version.json
  update_manifest.json
```

---

## 3. Update mechanism concept

**On application startup:**

Check backend endpoint:

```
GET /version
```

**If version is newer:**

- Notify user and allow download.

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## 4. Version file example

```json
{
  "version": "0.1.0",
  "download_url": "https://example.com/download/aza_assistant.exe"
}
```

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## 5. Safety rules

- Never auto-update without user confirmation
- Keep previous version until update success